import turtle
# 海龟
#   进行图形绘制
#  forward
        # 前进
#  backward
       #  后退
# 20190715_turtle.forward(100)
# 20190715_turtle.backward(100)



# 画笔颜色
     # 0 - 255
turtle.pencolor('red')
turtle.pencolor('#00ff00')



# 转向
turtle.speed(5)
turtle.forward(100)
turtle.right(90)
turtle.forward(80)
turtle.right(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(80)
turtle.hideturtle()


turtle.done()